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. 1998 Jul 1;18(13):5095–5102. doi: 10.1523/JNEUROSCI.18-13-05095.1998

Fig. 4.

Fig. 4.

Examples of paired-pulse interactions of the BLA to Nacb and the Fo/Fi to Nacb pathways. Paired-pulse stimulation of the BLA results in paired-pulse facilitation (A). However, when the conditioning pulse is applied to the Fo/Fi fibers and the test pulse is applied in the BLA, the latter is strongly attenuated (A) compared with a single BLA conditioning pulse with the same intensity. Double-pulse stimulation of the Fo/Fi also results in PPF (B). When the conditioning pulse is applied in the BLA followed by the test pulse in the Fo/Fi, the latter response is enhanced compared with a single Fo/Fi conditioning pulse with the same intensity. The dashed linesrepresent the firing probabilities for the conditioning pulses in these experiments.